Welcome to Shipbucket!
First things first, the drawing doesn't look bad as such, though the small scale makes it hard to tell. As far as style goes, you'll want to outline your sonobuoys and, of course, switch to a standard SB template if you want to post this as a finished drawing.
Made the Drone Variant.
(Also added missles to this one, since with the space savings from a cockpit to a computer, i assume you couls squeeze a few in there) Tell me what you guys think!
Yeaaah not really convinced. You'll find people around here with more real-world experience than me on the topic, but AFAIK the RC equipment doesn't make for much space saving in a manned-to-unmanned conversion, and you might want to leave some vaguely habitable space in case a human user has to take over locally. Realistically speaking, of course, make of that what you will
Definitely look around for IRL designs as inspiration. Newer and projected designs will give you a taste of what is considered feasible, while older ones will give you more visibility into the whole space allocation thing, which is beyond critical in craft of that size. H. I. Sutton's site linked by Odysseus1980 is a great place to start on a fairly obscure topic.
_________________Soviet Century/Cold War 2020 Alternate Universe
: Soviet and other Cold War designs 1990-2020.